Material for high strength, controlled recoil stent

a recoil stent and high strength technology, applied in the field of alloys, can solve the problems of inadequate microstructural tailoring of intravascular stents, and achieve the effect of simple and inexpensive manufacturing
US20060020325A1Inactive Publication Date: 2006-01-26CORDIS CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
CORDIS CORP
Publication Date
2006-01-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

A biocompatible metallic material may be configured into any number of implantable medical devices including intraluminal stents. The intraluminal stents may be specifically configured to optimize the number of discrete equiaxed grains that comprise the wall dimension so as to provide the intended user with a high strength, controlled recoil device as a function of expanded inside diameter. One biocompatible metallic material may comprise a Cobalt-Chromium alloy having substantially reduced Iron and / or Silicon content.
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Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to alloys for use in manufacturing or fabricating implantable medical devices, and more particularly, to intravascular stents manufactured or fabricated from alloys that provide high strength and controlled recoil.

[0003] 2. Discussion of the Related Art

[0004] Currently manufactured intravascular stents do not adequately provide sufficient tailoring of the microstructural properties of the material forming the stent to the desired mechanical behavior of the device under clinically relevant in-vivo loading conditions. Any intravascular device should preferably exhibit certain characteristics, including maintaining vessel patency through a chronic outward force that will help to remodel the vessel to its intended luminal diameter, preventing excessive radial recoil upon deployment, exhibiting sufficient fatigue resistance and exhibiting sufficient ductility so as to provide adequate cove...

Claims

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